Soda consumption, TV and video/computer games, and the frequency of meals heavily influenced students' weight in an Indiana University study that examined the impact of a school-based obesity intervention program over an 18-month period.

More soda consumption and screen time meant students were more likely to be overweight or to gain weight. The more frequently students ate meals each day, the less likely they were to stay overweight or gain weight during the study, which examined the Healthy, Energetic, Ready, Outstanding, Enthusiastic Schools program.